Decolouring from the unibody due to Apple sticker

[commandlinehool]

Hey there!

So I had the original clear with white outline Apple sticker on my right palm rest for about a year now. After removing it a few days ago i found out that the aluminium has a different color where the white outline was. I don't know if it is due to the glue, or the outline blocking uv or something. I think it looks kinda cool but also never seen it with any other sticker on my device.

Has anyone else experienced this or has an idea what caused it?

Cheers

 

[Abdichoudxyz]

I'm assuming the glue would be evenly across the whole sticker, not just the outline, so I think you may have something with the UV light affecting the anodising. Interesting effect!

 

[commandlinehool]

But if its the UV light, it would occure with other stickers too and even more with those on the outside of the body. Really weird.

 

[Abdichoudxyz]

Well, I've seen similar with stickers taken off other anodised aluminium things. Dyes are often used in the anodising process; it's very possible that the MacBook you have has some sort of dye used in its finish. Anodising can change colour/shade over time; red anodising is the most noticeable because it can fade to pink. Some finishes may darken over time. I think this is the most likely explanation unless an expert can come along to tell us what's actually happened!